consider an aarp medicare supplement insurance plan, insured by unitedhealthcare insurance company. go long. >>> pure and utter mahem. people tripping, bags everywhere, crying, screaming. >> that's sarah richardson describing the chaos inside terminal three inside lax. the scene secured. the alleged gunman wounded in custody, the exact condition we don't know. the tsa agent dead, the first ever killed in the line of duty. two from myth busters join us by phone. tory, you basically live tweeted the entire shooting today. where were you when you heard the gunshots? >> well, grant and i weren't actually together. we were -- i'm not sure where grant was. i was at gate 33, which was right, you know, a few gates from 36 and it didn't even register that it was gunshots until people were running down towards us, you know, screaming there's a shooter, there's a shooter. i never actually saw him but i heard the shots and kept my eye on the corridor people were running down to make sure he wasn't coming down towards us. i was upstairs in the virgin lounge and a bunch of people started bashing